refactor: improve import order and code formatting

- Reordered and grouped imports consistently in backend and frontend files for better readability.
- Applied indentation and formatting fixes across frontend components, services, and backend modules.
- Adjusted multiline method calls and type definitions for improved clarity.

backend/src/messages/messages.service.ts

@@ -1,8 +1,4 @@
-import {
-	ForbiddenException,
-	Injectable,
-	NotFoundException,
-} from "@nestjs/common";
+import { ForbiddenException, Injectable } from "@nestjs/common";
 import { EventsGateway } from "../realtime/events.gateway";
 import type { CreateMessageDto } from "./dto/create-message.dto";
 import { MessagesRepository } from "./repositories/messages.repository";